feat(daemon): enhance service management with start, stop, restart, and status commands for Windows

internal/cmd/reload_unix.go

@@ -3,11 +3,13 @@
 package cmd
 
 import (
+	"fmt"
 	"log"
 	"os"
 	"os/signal"
 	"syscall"
 
+	"github.com/fatih/color"
 	"github.com/torrentclaw/unarr/internal/agent"
 	"github.com/torrentclaw/unarr/internal/config"
 )
@@ -38,3 +40,37 @@ func startReloadWatcher(rc *ReloadableConfig) {
 		}
 	}()
 }
+
+// sendReloadSignal sends SIGUSR1 to the running daemon process.
+func sendReloadSignal() error {
+	state := agent.ReadState()
+	if state == nil {
+		return fmt.Errorf("daemon does not appear to be running (state file not found)")
+	}
+	p, err := os.FindProcess(state.PID)
+	if err != nil {
+		return fmt.Errorf("find process %d: %w", state.PID, err)
+	}
+	if err := p.Signal(syscall.SIGUSR1); err != nil {
+		return fmt.Errorf("send reload signal to PID %d: %w", state.PID, err)
+	}
+	fmt.Println()
+	color.New(color.FgGreen).Printf("  ✓ Reload signal sent to daemon (PID %d)\n", state.PID)
+	fmt.Println("  Config will be re-read shortly.")
+	fmt.Println()
+	return nil
+}
+
+// killPID sends SIGTERM to the given PID for a graceful shutdown.
+func killPID(pid int) error {
+	p, err := os.FindProcess(pid)
+	if err != nil {
+		return fmt.Errorf("find process %d: %w", pid, err)
+	}
+	if err := p.Signal(syscall.SIGTERM); err != nil {
+		return fmt.Errorf("stop daemon (PID %d): %w", pid, err)
+	}
+	color.New(color.FgGreen).Printf("  ✓ Stop signal sent to daemon (PID %d)\n", pid)
+	fmt.Println()
+	return nil
+}